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Sesse__

HN member
Joined
Sun, Jan 19, 2020, 8:49 PM UTC
HN karma
2,564
Public activity
1,025 items

About Sesse__

https://www.sesse.net/

Recent public activity

  1. comment
    Comment #49194903

    Generally most forms of PGO does not try to capture number of mispredicted branches (which isn't the same as how often a branch is taken).

  2. comment
    Comment #49162217

    I once got that question, started with the keyboard switches and the interrupts, and the interviewer sighed and asked me to get to the stuff in the browser.

  3. comment
    Comment #49095991

    The demoscene still exists, although it doesn't seem to attain a lot of new members, and most (not all!) of the activity is back on oldschool platforms like Amiga or similar. See e…

  4. comment
    Comment #49020823

    No, not really. Highway generates rather bad code as soon as you step outside a pretty narrow vertically-oriented scope, in my experience.

  5. comment
    Comment #49020801

    GF2P8AFFINE has entered the chat. (I've both played bridge actively and written SIMD code professionally, bridge rules are way simpler. Actually playing good bridge is probably har…

  6. comment
    Comment #49020779

    You may be interested in OpenMP.

  7. comment
    Comment #48924327

    Interesting, but if you are not robust to corrupted/malicious data, it is really in a different class of algorithm and it is hard to compare speeds directly. From memory, 2505 MB/s…

  8. comment
    Comment #48894313

    Android uses one uid per app.

  9. comment
    Comment #48892743

    > There's no way around it: a non-IPng-having node will have to go through a translation box of some kind. Yes. Note that it doesn't need to be someone else's relay; anyone with IP…

  10. comment
    Comment #48882242

    > Actually, we tried that I'm always fascinated by how many people think IPv6 adoption would have gone lightning-fast if we just used This One Weird Trick, where said trick has act…

  11. comment
    Comment #48880501

    > The current design was implementable by zillions of cheap humans running cheap hardware. Yes and no. The current internet arguably does not work without a browser and a TLS stack…

  12. comment
    Comment #48879932

    I was at a talk where he brought up exactly this (I also once did a talk alongside him, but that's a different story). He said there would be two changes: 1. It would have 128-bit …

  13. comment
    Comment #48879134

    So, in your example, each request needs 0.1 core-seconds of PoW. Is that right? Or, since you're saying 10000 hashes across the entire machine and 1000 needed, then on a typical 96…

  14. comment
    Comment #48873000

    I don't have a book, but my best recommendation would be: Learn how to measure. Whatever language you are using should have a profiler. Learn how to use it and look at how your cod…

  15. comment
    Comment #48872507

    This is called “installing a cryptominer on your web page” and is generally considered illegitimate.

  16. comment
    Comment #48871926

    That's a completely different question, your claim was about parallelism.

  17. comment
    Comment #48871113

    Uh, is it resistant to parallelization across multiple sites? Because that's the situation for the scrapers. They're not trying to solve a single PoW challenge across many cores.

  18. comment
    Comment #48794635

    The sad part is that most employers don't care particularly about performance optimization skills (the economics don't work out, they can often just fix the problem cheaper with mo…

  19. comment
    Comment #48773368

    I once measured a 80s-communally-built event space with a laser meter (it was useful to have digital floor maps for event planning). No measurement was a perfectly round number. No…

  20. comment
    Comment #48757710

    > Also to your point, this is why compliant peak meters use a mandatory 4x upsampling at 48k. This isn't due to latency, it's because the true peak (in the analog waveform) could b…

  21. comment
    Comment #48706423

    It's behind a flag, if you want to play with it. (The easiest way is usually just to test in Canary.)

  22. comment
    Comment #48661675

    Did you actually test? I did it and it worked fine (and zooming in confirmed that the RGB bars are nicely preserved). Be sure to put your subsampling at 4:4:4.

  23. comment
    Comment #48636290

    Why do you think it wouldn't work for a JPEG? I just made one like that, and it worked just fine.

  24. comment
    Comment #48617162

    Just remove the A record, and nearly all the scrapers disappear. :-) (And then you get one email per month or so that “your host does not resolve in DNS”.)

  25. comment
    Comment #48598746

    Are you maybe confusing “downstream” with “mainstream”? Being “downstream” of a product means that you are a derivative of that product (your upstream), taking in basically all of …